Metal ceiling.



PATENTED OUT. 6, 1903.

A. LEY. V

" ME IL APPLIG'AT LED A 1903.

N0 MODEL.

hTo. 740,843.

NITED STATES ''atented October 6, 1903 P TENT FFICE.

ALBERT FRIEDLEY, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO HERMAN F. VOSHARDT, OF CHICAGO, ILLINOIS.

METAL CEILING:

SPECIFICATION forming part of Letters Patent No. 740,843, dated October 6, 1903.

Application filed April 27, 1903. Serial No. 154,408. (No model.)

To a ZZ whom it may concern.-

Be it known that I, ALBERT FRIEDLEY, a citizen of the United States, residing at No. 487 West Congress street, in the city of Ohicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Metal Ceilings, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved metal ceiling composed of interlocking metal plates.

It consists of the features of construction set out in the claims.

In the drawings, Figure l is a plan view of a portion of a ceiling made of tiles embodying my invention. Fig. 2 is a section at the line 2 2 on Fig. 1. ,Fig. 3 is a section at the line 3 3 on Fig. 1.

I have shown my invention as applied to a ceiling made of rectangular metal plates 1 1, the. Two edges about one corner of each plate are provided with flanges 2 and 2, foldedback over the outer surface of the plate, while the other two edges about the diago nally opposite corner are provided with flanges 3 and 3, folded back over the inner surface of the plate. Two of. the opposite edges 2 and 3 have their said flanges fully turnedthat is, so that they extend parallel with the general plane of the plate at opposite sides thereof-and the other two opposite parallel edges have their flanges 2 and 3 only partly turned, so that they stand 0% obliquely from the opposite surfaces of the plate, overhanging the same. Immediately inward from the edges of the flanges on all four sides there is formed a bead 4, which presents a guard-shoulder toward the edge of the flange, so close thereto that when the flange 2, for example, is interlocked with the flange 3 said flanges can be disengaged only by a longitudinal or endwise-sliding movement of one plate upon the other, and said plates can therefore be engaged only by similar endwise entrance of one of the two flanges into the fold of the other. The plates are designed to be assembled by interlocking the corresponding flanges 2 and 3 of one row of plates by endwise engagement of one flange within the other. The engagement of the plates of the next adjacent row with those of the first row-is effected by the broadside entrance of flanges 2 with the folds of flanges 3, which, it will be seen, can be effected in the concluding portion of the end wise-sliding movement by which each tile of the second row is engaged with the adjacent tile of the same row, and when the plates of the second row are thus engaged with each other by the sliding movement and with theplates of the first row by the broadside entrance of their respective flangesinto each other,as described, the seams thus formed between the interlocked flanges 2 and 3 are completed by hammering down the flanges from their oblique to a flat or horizontal position, whereby the folded edge of the outerlapped plate in Whose fold the flange 3 of the next plate is engaged is sunken down behind the bead 4: of the other plate, which thus secures the seam thus formed in the same manner as the seams between the flanges 2 and 3 are secured at the edges, which are interlocked by the endwise movement de scribed. Preferably for convenience in entering the plates of the second and subsequent rows into the flanges'of the preceding plates of said rows, respectively, at the commencement of the endwise-slidlng movement by which said plates are engaged, as de-' scribed, the corners of each plate are cutout, leaving at each junction of four corners a small square aperture 5, and the plates may be secured to the ceiling by means of broadheaded and preferably ornamental nails 8,

driven into the ceiling through these aper tures, the heads of such nails overlapping all four plates thus meeting at the corner and sustaining them all. Additional nails may be employed at other points along the edges of the plates, if desired.

I claiml. A metal ceiling comprising rectangular plates, each having the two edges meeting at one corner provided with flanges folded back over the outer surface of the plate, and the two edges meeting at the diagonally opposite corner provided with flanges folded back over the inner surface of the plate, each plate having an upstanding bead extending along the edges having the outwardly-turned flanges guards over against the edges of the flanges, retaining the plates with their said flanges interlocked. 15

In testimony whereof I have hereunto set my hand, in the presence of two witnesses, at Chicago, Illinois, this 22d day of April, A. D. 1903.

ALBERT FRIEDLEY.

In presence of- CHAS. S. BURTON, FREDK. GLFISCHER. 

